How does the poet inject his own cultural experience into the poem?
he describes his blood on the street.
he talks about the flower of his country.
he laughs.
he struggles to envision the autumn mist.

If you are referring to Pablo Neruda's poem "Your Laughter," then I believe the correct answer is B. He talks about the flower of his country.
This is what he says in the poem:
I want your laughter like 
the flower I was waiting for, 
the blue flower, the rose 
of my echoing country.

As you can see here, he is connecting his home country and his culture to this flower, and ultimately to her laughter that he so desperately desires to see again. 

"Overwhelmed by pain, he lay there in the fearsome stench for hours, listened to the men and animals die, and learned what warfare meant. Finally, when he knew that he could bear it no longer and would welcome death himself, he opened his eyes and was once again on the bed. The Giver looked away, as if he could not bear to see what he had done to Jonas. “Forgive me,” he said."

Explanation:

"The Giver" is a book written by Lois Lowry, where we are introduced to a futuristic society where the whole society is freed from crimes, sadness, memories and any other element that can cause bad feelings. All the memories of all citizens are accumulated in a single person, who is chosen from time to time and trained to be able to bear this burden.

The person who keeps the memories of the society is called The Giver and Jonas is the new one.

However, receiving memories can be very painful, mainly because many memories are terrible and traumatic, which causes Jonas a lot of pain and makes him struggle not to receive them. An example of this can be seen in the quote above, where Jonas receives an extremely painful memory from the old Giver, causing him to fight against it.